Pneumatic arch-support.



R. S. CARLING.

PNEUMATIC ARCH SUPPORT.

-APPLICATION FILED FEB.2.1917.

1 l 6,4123 Patented Sept. 16, 1919.

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Specification of Letters. Eatent.

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Patented Sept. Mt, tg.

.pgieation fled February 2, '1917. erfial Ne. 146,23.

To all whom i may concern Be it known thatl, Rose S. Cei-imno, a citizen of the United States. residing at Los Angeles, in the county of Los Angeles and State of California7 have invented new and useful Improvements in Pneumatic rehf Supports, of which the foiiowing a speck ficution. I

My object is to make a pneumatic arch support having an inlet valve inthe lower side of the air chamber and, uniier the arch so that when the pad iniiated 'the :toot of the wearer wili not Contact with the valve.

Figure 'i is a `View in sie elevation ilinetrat-ing the arch support as pesitioned Within a shoe and beneath the foot of the wearer.

Fig. 2 is an enlarged bottom plan, View illustrating the insole and particulari7 disclosing the disposition of the pneumatic pad in vrelation thereto- Fig. 3 is a View in transverse section through the pad. as seen on the line 3-3 of F 1g. 2, illustrating the detail construction of the pari and insoie, bottom siaie up.

Referring more partieuiarly'to the drawings, l0 inciicates en insole,- whieh is here shown as formed of a iiexihie ahrie, the under side of Whiehhas been treated with rubber to prevent the insole from slipping Within the shoe. This sole portion is of a shape to conform to the heei of the shoe and to extend partially under the haii of the foot. Vnicanized tothe under fac/e of the insole and aiong" the inner side of the arch is a sheet of rubberized fabric il. rihis fabric is secured to the insoleelong marginal edge only and therefore leaves an air ocket 12. This pocket is Substantially kidney shaped in pian antiv as shown in Fig. 3 of the drawings is suhetantiaiiy -semi-sphericai in transverse cross Section.

.'in order to permit thepocket i2 to he sur plied With'air at varying pressures, an airl valve 13 'is monnte within an opening in the center of the fabric il. This valve is composed of a tubular stem ift having an enlarged inner iange 15. The stem is threadeci exterioriy and ie engage by a looking' nut 16 "by which heki in it is sition, To more Seeoreiy' cian-ip 'the nhrio around the stein, a damping washer isprovieci and interpose between ineknut and the fabric. The stern formed with a oentrai bore Within which a. vaive mernher 18 is poeitioneti. vaivebeing erovie to est: r.blish and discontinue communication with the pocket.

"When the arch supports are used, they are piaced Within the shoe with the pads bene: th the inner Side ot the 'toot arches. As the wearer Weihe, he will exert preasure upon the insole to hold it in place and at the Same time wiii insured that the vgeakened portion of the foot arel'wili be properly any ported hy means oi' the pneumatic pail. lit will he ixiiierstood 'that these pads have proviousiy heen inilated to a desired pressure and that they will support the foot in a comfortable manne?. i

Especiai attention ie called to the fact that the inlet valve is located at the center oi the Wall forming the lower side of the air chamber and under the arch of the foot oi? the wearer so that when the pad ie iniated the air valve will not Contact with the foot of the wearer.

it will thus be seen that the eomhine'insoie and arch support here diselosef is aimpie in its construction, wiii readiiy re# main in a desire-tl position While Weaver is walking, anti Wiii naturally anii firmly support the weakened portion oi Ithe foot arehes. "i

lvilhiie l have Shown the preferred. construction of .my arch support es now known to me.; it 'will' he understood that/variosehanges in the combination, construction, anti arrangement of' parte may heiniafie by these skilie in the art Without departing from the spirit of my invention.

elaim: 4 l. in arch support comprising a iiexibie ahrie insole adapten to hef positioned under the heel of the lient .fin entend te' a, point heneath the ball ot' 'the foot. sheet oit rubberizecl materiai seeured at its edges to the lower face of the inso'ie and forming 'an air retaining pocket, anti an inlet valve ins'erted tlnoug'h'the center of the rubberized sheet, so as to he at the hottom of the pocket.,

2. An arch support comprising a flexible .fabric insole shaped to conform to the sole of the `foot and to extemi from a 'position under the hec-.i te a point beneath the hall of the Jfoot, a sheet of rnoherized material, secnreii to the iower 'face said insoie. a

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sheet oi ruhheriaeci material forming al j sheet of rubherize. material to form an airtight pocket, a, second sheet of fabric. covermg the pocket thus'formod and the insole, and an air valve positioned through this sheet of fabric at its center and through the wall of the ooket, so as to be at the bottom of the air' c. amber.

3. An 4auch support comprising a exible insole, a Sheet of material secure to the bottom of the insole and forming an air chamlrm"7 and ,an-air valve mounted in the 1`0 ower sheet of material so as to be at the bottom of the air chamber when the chamber is inated,

In testimony whereof I have signed my name to this specification.

ARCBJIL S. CABLNG. 

